ABXB vs BKAG

ABXBDAbacus Flexible Bond Leaders ETF

BKAGABNY Mellon Core Bond ETF

In short

ABXB The agg-bond aisle is wall-to-wall index trackers. ABXB is the odd one out: a trend-following system that shifts the bond mix as momentum changes, with at least 80% kept in bonds, rebuilt from a former tactical high-yield fund.

BKAG A core bond index fund that charges nothing. BKAG tracks the same Bloomberg US Aggregate benchmark the giants track, at a 0.00% expense ratio, and has been doing it since 2020.

Stated mandate

ABXB The Fund is being repositioned as a tactical intermediate core-plus bond strategy using a trend-following system. Its revised policy requires at least 80% of assets in bonds or instruments with similar economic characteristics.

BKAG The fund seeks to track the Bloomberg US Aggregate Total Return Index.

Why people hold it

• ABXB Instead of tracking a static bond index, a rules-based trend system rotates the mix as price momentum shifts, the rare tactical pick in an aisle of buy-and-hold trackers.
• Its revised policy keeps at least 80% of assets in bonds or economically similar instruments, so the tactical calls happen inside fixed income, not across asset classes.
• Plain 1940 Act ETF wrapper, priced and traded all day, with distributions on a quarterly schedule.

• BKAG A 0.00% expense ratio. The median fund in the core bond group charges 0.36%, and even the cheap giants (BND, SPAB, SCHZ) charge 0.03%.
• Tracks the Bloomberg US Aggregate Total Return Index tightly, one of the closest index-following records in its peer group.
• Broad by design: roughly 4,000 bonds in the portfolio, with distributions paid monthly rather than quarterly.
• A multi-billion-dollar fund from BNY Mellon, wrapped in a standard 1940 Act ETF structure with no exotic mechanics.

Worth knowing

• ABXB Cost is 0.62% net of a waiver through November 28, 2026, versus 0.82% gross, and sits above the category median, where AGG, BND and SPAB each charge 0.03%.
• The trend-following mandate dates to the 2025 repositioning. Earlier results came from a tactical high-yield strategy under prior branding, so the long chart is a different fund.sec.gov
• Small and lightly traded for the category, which tends to mean wider spreads and more work moving size in or out.

• BKAG Rate risk is the trade-off. This is full-market bond exposure, and bond prices move opposite interest rates. Volatility is the weakest part of its profile.
• Moderately traded, not one of the volume monsters in the category. Spreads and limit orders matter more here than with the largest core bond names.
• At zero, the fee edge over 0.03% rivals is real but small in dollar terms, so tracking and trading costs do more of the work.

Full ABXB profile⁠

Full BKAG profile⁠